Before I went back to work, my children attended Northbay. It definitely functions differently than a traditional school. Students attend school 3 days a week, and spend the other 2 days homeschooling. Northbay provides an excellent education at a reasonable price. The price is much lower since students are only attending 3 days a week.
If you are interested in Northbay, you need to start the admission process very early. They make you take a parenting course that takes several weeks before you can enroll your student.